Test run my 253

[hilta]

Thanks guys, what should the compression be?? is 150 good?

[Sandaro]

Thanks guys, what should the compression be?? is 150 good?

Yeah I think that's pretty reasonable. Should be fairly consistent, which you have. A problem if a lot of variation, say 80 in one and 150 in the rest. 12 months won't hurt a motor, unless you leave it at the beach.

[Beachy]

25 yrs ago it would have been not sure what it is today in modern motors

[Big Rob]

140- 150 is fine. And 12 months without starting is no big deal, just wind the engine over until you get some oil circulating before you give it spark. If it lights up in the 1st few revolutions you may have trouble due to lack of oil on cylinder walls, cam and crank bearings etc...

It won't hurt to pull each spark plug out and give it a squirt of oil either.